12. Calculate the flow potential through the diaphragm of calcium carbonate particles in an aqueous solution of sodium chloride, if it is known that the electrophoresis rate of carbonate particles in the same solution without taking into account electrophoretic braking is 1010-6m/s; =81;=110-3Pas; E=2102V/m; a=310-7m; =1.5107m-1; р=5103 Pa; =2.510-2 Ohm-1m-1; =1.2.

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